/Engine/Plugins/Experimental/PCG/Source/PCG/Public/PCGSubsystem.h
Schedules an operation to cleanup the graph in the given bounds
[FPCGTaskId](API\Plugins\PCG\FPCGTaskId) CleanupGraph ( [UPCGComponent](API\Plugins\PCG\UPCGComponent) * Component, const FBox & InBounds, bool bRemoveComponents, bool bSave )